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Related Experiment Videos

Lateral capillary forces between solid bodies on liquid surface: a lattice Boltzmann study.

Hiroyuki Shinto1, Daisuke Komiyama, Ko Higashitani

  • 1Department of Chemical Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan. shinto@cheme.kyoto-u.ac.jp

Langmuir : the ACS Journal of Surfaces and Colloids
|February 24, 2006
PubMed
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This study simulates capillary forces between two solid bodies on a liquid surface. The lattice Boltzmann method accurately predicts attractive and repulsive forces based on wettability and weight.

Area of Science:

  • Fluid dynamics
  • Interfacial phenomena
  • Computational physics

Background:

  • Solid bodies on liquid surfaces deform the interface, generating capillary forces.
  • These forces can be attractive or repulsive, influenced by body wettability and weight.
  • Understanding these interactions is crucial for various applications involving fluid interfaces.

Purpose of the Study:

  • To investigate the lateral capillary force between two square bodies at a liquid-vapor interface.
  • To validate a numerical simulation method for predicting these forces.
  • To analyze the influence of wettability, weight, and separation distance on capillary interactions.

Main Methods:

  • Numerical simulations using a two-dimensional two-phase lattice Boltzmann (LB) method.

Related Experiment Videos

  • Simulation of vertically constrained bodies with fixed triple points.
  • Calculation of interaction forces as a function of separation distance, interfacial tension, and gravitational acceleration.

    • Main Results:

    • The lattice Boltzmann method successfully reproduced the lateral capillary interaction forces.
    • Simulation results showed good agreement with analytical expressions for capillary interaction.
    • The study demonstrated the ability to model forces for bodies with varying wettabilities.

    Conclusions:

    • The employed LB method is a reliable tool for simulating capillary forces between bodies at liquid-vapor interfaces.
    • The findings confirm the dependence of capillary forces on physical parameters like wettability and gravity.
    • This research provides a foundation for further studies on interfacial mechanics and multiphase flow.